Lost Two More Chickens

I lost two chickens a couple of days ago.  My wife saw what looked like a coyote running by the fence.  The White Leghorns really don’t want to stay in the fence and now I have one less.  The Black Java’s also don’t want to stay inside the electric fence and I now have one less of those as well.  I need to re-evaluate my electric fence as the chickens do not seem to be wary of it any more.  I suspect that now with two lengths of electro-net fencing I don’t think the fence charger is strong enough with the grass it goes through.